execute if entity @e[tag=rmr.boss] run tellraw @s {"translate": "rmr.message.hell_mode_cant_switch_when_boss_alive", "color": "red", "bold": true}
execute if entity @e[tag=rmr.boss] run return fail
execute if score # rmr.entity.hell_mode matches 1 run tellraw @a {"translate": "rmr.message.hell_mode_off", "color": "white"}
execute if score # rmr.entity.hell_mode matches 1 run return run scoreboard players set # rmr.entity.hell_mode 0
tellraw @a {"translate": "rmr.message.hell_mode_on", "color": "red", "bold": true}
scoreboard players set # rmr.entity.hell_mode 1